Stem-winding watch.



N0. 705,703. Patented July 29, I902.

W. E. PORTER.

STEM WINDING WATCH.

(Application filed Jan. 22, 19021 (In llodel.)

ATTORNEYS INVENTOH WITNESSES UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NE'W HAVEN, CONNECTICUT, ASSIGNOR TO THE NEW HAVENCLOCK COMPANY, OF NEW' HAVEN, CONNECTICUT, A COR-- POItATION OFCONNECTICUT.

STEM-WINDENG WATCH.

SPECIFICATION forming part of Letters Patent No. 705,703, dated July 29,1902.

Application filed January 22,1902- Serial No. 90,789. (No model.)

To all whom it may concern.-

Be it known that I, WILsoN E. PORTER, of the city and county of NewHaven and State of Connecticut, have invented a new and use fulImprovement in Stem-Vinding atches,

of which the following is a full, clear, and exact description whentaken in connection with theaccompanying drawings, which form a partthereof, and in which- Figure 1 represents atop View of themovement-plate and associated parts; Fig. 2, a similar View, theintermediate wheel being shown as disengaged from the winding-train;Fig. 3, a bottom View of the plate, showing parts in the same positionindicated in Fig.

1; and Fig. 4-, an enlarged detail view in elevation of the intermediatewheel and its post.

In all figures similar letters of reference represent like parts.

This invention relates to an improvement in stem-winding watches, andhas for its object the production of a simple, durable, and effectiveconstruction the parts of which are easily assembled and easilyseparated, while 2 5 efficient in operation.

The invention consists of the details of construction and combination ofparts set forth and claimed hereinafter.

Referring to the drawings for a more particular description, the partsdesignated by the letter A represent the case, B the pendant attachedthereto, and C the rotary stem of the pendant, to which is secured thecrown D. p

E represents the movement or supporting plate, upon which is mounted thewheel F of the winding-train. In the movement-plate E is formed a slotG, extending to the periphery of the plate, so that one end 9 is open.

An intermediate wheel H is mounted on one end of the post J, on theopposite end of which is carried a flanged head or enlargement K. Thediameter of the post J is such as to fit within the slot Gr, while theflanged head and the intermediate wheel H overlap the edges of the slot,so as to prevent the lon-- gitudinal withdrawal of the post J. A lightspring L is also mounted on the plate E, so that its free end extendsacross the mouth or open end g of the slot G. The other parts of thewatch may be of any suitable or wellknown construction.

In assembling the watch the spring L is forced to one side to open themouth 9 of the slot Gr, and the post J is inserted into the slot,whereupon the spring L will bear upon the intermediate wheel H, forcingthe post to the closed end of the slot, in which position theintermediate wheel II will engage the wheel F of the winding-train andat the same time be engaged by a pinion M on the rotary stem C. Thespring L being yielding allows the intermediate wheel H to be moved,under pressure, toward the open end of the slot, and upon the backwardmovement of the rotary stem C such pressure is exerted on the inter--mediate wheel II and the wheel is withdrawn from engagement with thewinding-train I The slot G is of suflicientlength to permit theintermediate wheel H to be moved toward its open end and disengaged fromthe wheel F of the winding-train without'the post J being forcedentirely out of the slot. The spring Ii performs the double function ofretaining the post .I within the slot and also holding the intermediatewheel II normally in engagement with the wheel F of the winding-train.

Having now described my invention, which may vary somewhat withoutdeparting from the spirit thereof, what I claim, and desire to secure byLetters Patent, is-

1. In a watch, the combination with the movement or supporting plate,having a slot extending to its periphery; of a wheel mounted on a post,which post is adapted to fit within said slot, and is prevented fromlongitudinal withdrawal therefrom; and a spring closing the open end ofsaid slot, and normally tending to force said post toward the closed endof said slot, substantially as described. 0

2. In awatoh, the combination Witha movement or supporting plate, havinga slot ex- 2 vomoe tending to its periphery; of a Winding-train withsaid winding-train, substantially as demounted on said plate; a rotarystem; 2 Wheel scribed. w mounted on a, post, and when in position ae- InWitness whereof I have hereunto set my mated by said stem, said postbeing adapted hand on the 18th day of January, 1902.

5 to fit; within said slot, and being prevented WILSON E. PORTER.

from longitudinal Withdrawal therefrom; and

Witnesses:

a spring closing the open end of said slot, and EUGENE CARTIER,yieldingiy holding said Wheel in engagement M. E. SMITH.

